Nonstop flight route between St. Mary's, Alaska, United States and Blackwater, Queensland, Australia:
Departure Airport:
(62°3'38"N by 163°18'6"W)
Arrival Airport:
(23°36'11"S by 148°48'24"E)
Distance from KSM to BLT:
6,479.24 miles (10,427.30 km)
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Jump to:
- About this route
- KSM Airport Information
- BLT Airport Information
- Facts about KSM
- Facts about BLT
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
- Map of Nearest Airports to BLT
- List of Nearest Airports to BLT
- Map of Furthest Airports from BLT
- List of Furthest Airports from BLT
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Blackwater Airport (BLT), Blackwater, Queensland, Australia would travel a Great Circle distance of 6,479 miles (or 10,427 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between St. Mary's Airport and Blackwater Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between St. Mary's Airport and Blackwater Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | KSM / PASM |
| Airport Name: | St. Mary's Airport |
| Location: | St. Mary's, Alaska, United States |
| GPS Coordinates: | 62°3'38"N by 163°18'6"W |
| Operator/Owner: | Alaska DOT&PF |
| Airport Type: | Public |
| Elevation: | 312 feet (95 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from KSM |
| More Information: | KSM Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | BLT / YBTR |
| Airport Name: | Blackwater Airport |
| Location: | Blackwater, Queensland, Australia |
| GPS Coordinates: | 23°36'11"S by 148°48'24"E |
| Operator/Owner: | BHP Billiton Mitsubishi Alliance |
| Airport Type: | Public |
| Elevation: | 657 feet (200 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from BLT |
| More Information: | BLT Maps & Info |
Facts about St. Mary's Airport (KSM):
- The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
- St. Mary's Airport (KSM) has 2 runways.
- The closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
- Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
Facts about Blackwater Airport (BLT):
- Blackwater Airport (BLT) currently has only 1 runway.
- The furthest airport from Blackwater Airport (BLT) is Agostinho Neto Airport (NTO), which is located 11,844 miles (19,061 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- Because of Blackwater Airport's relatively low elevation of 657 feet, planes can take off or land at Blackwater Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The closest airport to Blackwater Airport (BLT) is Emerald Airport (EMD), which is located 40 miles (64 kilometers) W of BLT.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12.52 miles (20.15 km) W | Mountain Village Airport (MOU) | Mountain Village, Alaska, United States |     |
| 2 | 15.71 miles (25.28 km) ESE | Pilot Station Airport (PQS) | Pilot Station, Alaska, United States | |
| 3 | 43.61 miles (70.18 km) ESE | Marshall Don Hunter Sr. Airport (MLL) | Marshall, Alaska, United States | |
| 4 | 58.95 miles (94.87 km) WNW | Sheldon Point Airport (SXP) | Sheldon Point, Alaska, United States | |
| 5 | 61.02 miles (98.20 km) NW | Alakanuk Airport (AUK) | Alakanuk, Alaska, United States | |
| 6 | 62.90 miles (101.24 km) NW | Emmonak Airport (EMK) | Emmonak, Alaska, United States | |
| 7 | 67.40 miles (108.48 km) N | Kotlik Airport (KOT) | Kotlik, Alaska, United States | |
| 8 | 67.43 miles (108.52 km) ESE | Russian Mission Airport (RSH) | Russian Mission, Alaska, United States | |
| 9 | 75.21 miles (121.04 km) W | Scammon Bay Airport (SCM) | Scammon Bay, Alaska, United States | |
| 10 | 83.21 miles (133.91 km) WSW | Chevak Airport (VAK) | Chevak, Alaska, United States | |
| 11 | 84.72 miles (136.35 km) SSE | Nunapitchuk Airport (NUP) | Nunapitchuk, Alaska, United States | |
| 12 | 85.97 miles (138.35 km) SSE | Kasigluk Airport (KUK) | Kasigluk, Alaska, United States | |
| 13 | 88.49 miles (142.42 km) W | Cape Romanzof Air Force Station Cape Romanzof Long Range Radar Site (CZF) | Cape Romanzof, Alaska, United States | |
| 14 | 89.19 miles (143.53 km) SSW | Newtok Airport (WWT) | Newtok, Alaska, United States | |
| 15 | 89.22 miles (143.59 km) SSE | Atmautluak Airport (ATT) | Atmautluak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,494.08 miles (16,888.54 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,482.44 miles (16,869.80 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,457.83 miles (16,830.21 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,416.76 miles (16,764.12 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,371.90 miles (16,691.92 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,261.64 miles (16,514.46 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,199.66 miles (16,414.71 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 8 | 10,195.75 miles (16,408.43 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,169.94 miles (16,366.89 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 10 | 10,169.94 miles (16,366.89 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 11 | 10,157.43 miles (16,346.75 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 12 | 10,151.99 miles (16,338.00 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,149.37 miles (16,333.79 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 14 | 10,143.31 miles (16,324.03 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 15 | 10,133.50 miles (16,308.25 km) SE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 39.83 miles (64.10 km) W | Emerald Airport (EMD) | Emerald, Queensland, Australia | |
| 2 | 55.63 miles (89.53 km) N | Middlemount Airport (MMM) | Middlemount, Queensland, Australia | |
| 3 | 73.39 miles (118.10 km) NNW | Dysart Airport (DYA) | Dysart, Queensland, Australia | |
| 4 | 94.71 miles (152.41 km) NW | Clermont Airport (CMQ) | Clermont, Queensland, Australia | |
| 5 | 106.80 miles (171.88 km) E | Rockhampton Airport (ROK) | Rockhampton, Queensland, Australia | |
| 6 | 116.43 miles (187.38 km) NNW | Moranbah Airport (MOV) | Moranbah, Queensland, Australia | |
| 7 | 140.79 miles (226.58 km) W | Alpha Airport (ABH) | Alpha, Queensland, Australia | |
| 8 | 153.90 miles (247.68 km) E | Gladstone Airport (GLT) | Gladstone, Queensland, Australia | |
| 9 | 167.05 miles (268.83 km) SSE | Taroom Airport (XTO) | Taroom, Queensland, Australia | |
| 10 | 169.67 miles (273.06 km) N | Mackay Airport (MKY) | Mackay, Queensland, Australia | |
| 11 | 215.37 miles (346.60 km) N | Whitsunday Coast Airport (PPP) | Proserpine, Queensland, Australia | |
| 12 | 220.69 miles (355.16 km) WSW | Blackall Airport (BKQ) | Blackall, Queensland, Australia | |
| 13 | 221.65 miles (356.72 km) W | Barcaldine Airport (BCI) | Barcaldine, Queensland, Australia | |
| 14 | 224.40 miles (361.13 km) N | Great Barrier Reef Airport (HTI) | Hamilton Island, Queensland, Australia | |
| 15 | 224.87 miles (361.90 km) SE | Gayndah Airport (GAH) | Gayndah, Queensland, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,843.97 miles (19,060.97 km) NW | Agostinho Neto Airport (NTO) | Ponta do Sol, Santo Antão, Cape Verde | |
| 2 | 11,822.96 miles (19,027.16 km) NW | Cesária Évora International Airport (VXE) | São Vicente, Cape Verde | |
| 3 | 11,776.84 miles (18,952.94 km) NW | Preguiça Airport (SNE) | São Nicolau, Cape Verde | |
| 4 | 11,722.59 miles (18,865.64 km) NW | Amílcar Cabral International Airport (SID) | Sal Island, Cape Verde | |
| 5 | 11,696.02 miles (18,822.88 km) NW | Mosteiros Airport (MTI) | Mosteiros, Cape Verde | |
| 6 | 11,692.32 miles (18,816.92 km) NW | São Filipe Airport (SFL) | Fogo, Cape Verde | |
| 7 | 11,690.76 miles (18,814.41 km) NW | Aristides Pereira International Airport (BVC) | Boa Vista, Cape Verde | |
| 8 | 11,655.51 miles (18,757.67 km) NW | Maio Airport (MMO) | Maio, Cape Verde | |
| 9 | 11,655.09 miles (18,757.01 km) NW | Praia International Airport (RAI) | Praia, Cape Verde | |
| 10 | 11,534.54 miles (18,563.00 km) WNW | La Palma Airport (SPC) | La Palma, Canary Islands, Spain | |
| 11 | 11,515.89 miles (18,532.98 km) WNW | La Gomera Airport (GMZ) | Alajeró / San Sebastián, Canary Islands, Spain | |
| 12 | 11,514.16 miles (18,530.20 km) W | La Güera Airport (ZLG) | La Güera, Western Sahara | |
| 13 | 11,513.04 miles (18,528.39 km) W | Nouadhibou International Airport (NDB) | Nouadhibou, Mauritania | |
| 14 | 11,477.92 miles (18,471.88 km) WNW | Tenerife-South Airport (TFS) | Tenerife, Canary Islands, Spain | |
| 15 | 11,471.42 miles (18,461.42 km) W | Dakhla Airport (VIL) | Dakhla, Western Sahara | |